As always, if I find the Annihilation easy enough I will do a No 6-Star Challenge and so here it is with Annihilation 7, pretty tricky towards the end and it took me a lot more attempts than Annihilation 6
The ending could've been better, as in I was looking at the center taking a while do kill off the enemies and then I realize I can retreat and deploy some to speed up.
Overall still pleased with the outcome, your mileage may vary.